Language: English . This book usually ship within 10-15 business days and we will endeavor to dispatch orders quicker than this where possible. Brand New Book. Making art is calculable. These works of art based on mathematical formulas show that chaotic sets of numbers can be definitely aesthetic, namely when sober figures acquire colour. Each image invites you to explore its own world. Calvendo calendars are premium products - a bit more pricey than others but with added benefits: Our calendars always look beautiful on your wall because we produce them locally with premium paper and sophisticated spiral binding, ensuring easy turning of pages and flat hanging against the wall. A protective transparent plastic cover sheet provides added stability and each calendar comes in five languages. Treat yourself to a Calvendo calendar and you get something that looks better all year round.